<template>
  <div id="app">
    <div style="padding: 20px 20px 20px 20px">
      <!--查询表单-->
      <el-form :inline="true" class="demo-form-inline">
        <el-form-item>
          <el-input v-model="courseQuery.title" placeholder="课程名称"/>
        </el-form-item>

        <el-form-item>
          <el-select v-model="courseQuery.status" clearable placeholder="课程状态">
            <el-option value="Normal" label="已发布"/>
            <el-option value="Draft" label="未发布"/>
          </el-select>
        </el-form-item>

        <el-button type="primary" icon="el-icon-search" @click="initCourse()">查询</el-button>
        <el-button type="default" @click="resetData()">清空</el-button>
      </el-form>
    </div>
    <div style="padding: 20px 20px 20px 20px">
      <!-- 表格 -->
      <el-table
        :data="list"
        border
        fit
        highlight-current-row>

        <el-table-column
          label="序号"
          width="70"
          fixed
          align="center">
          <template slot-scope="scope">
            {{ (page - 1) * limit + scope.$index + 1 }}
          </template>
        </el-table-column>

        <el-table-column align="center" prop="title" label="课程名称" width="250"/>

        <el-table-column align="center" label="课程状态" width="135">
          <template slot-scope="scope">
            <el-tag v-if="scope.row.status==='Normal'" type="primary">已发布</el-tag>
            <el-tag type="danger" v-else>未发布</el-tag>
          </template>
        </el-table-column>

        <el-table-column align="center" width="135" prop="lessonNum" label="课时数"/>

        <el-table-column prop="gmtCreate" align="center" label="添加时间" width="250"/>

        <el-table-column align="center" prop="viewCount" label="浏览数量" width="135"/>

        <el-table-column label="操作" width="450" fixed="right" align="center">
          <template slot-scope="scope">
            <router-link :to="'/course/info/'+scope.row.id">
              <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程基本信息</el-button>
            </router-link>
            <router-link :to="'/course/chapter/'+scope.row.id">
              <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程大纲息</el-button>
            </router-link>
            <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除课程信息
            </el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页 -->
      <el-pagination
        :current-page="page"
        :page-size="limit"
        :total="total"
        style="padding: 30px 0; text-align: center;"
        layout="total, prev, pager, next, jumper"
        @current-change="initCourse"
      />
    </div>
  </div>
</template>

<script>


  export default {
    data() { //定义变量和初始值
      return {
        list: [],//查询之后接口返回集合
        page: 1,//当前页
        limit: 10,//每页记录数
        total: 0,//总记录数
        courseQuery: {} //条件封装对象
      }
    },
    methods: {
      initCourse(page = 1) {
        this.page = page
        this.postRequest('/eduservice/course/findAllCourse/' + this.page + '/' + this.limit,this.courseQuery).then(res => {
          this.list = res.data.data
          this.total = res.data.total
        })
      },
      resetData() {//清空的方法
        //表单输入项数据清空
        this.courseQuery = {}
        //查询所有讲师数据
        this.initCourse()
      },
      removeDataById(id){
        this.$confirm('此操作将此课程删除, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {  //点击确定，执行then方法
          this.deleteRequest('/eduservice/course/'+id).then(res => {
            if(res){
              this.$message({
                type: 'success',
                message: res.message
              });
              this.initCourse()
            }
          })
        })
      }
    },
    mounted() {
      this.initCourse()
    }
  }
</script>

<style>

</style>
